If your son purchased a DLC (downloadable content) for a game that he does not own, typically, the DLC cannot be used without the base game. In most cases, DLC is tied to the game it is intended for, and without the game, the DLC will not be accessible.
To resolve this situation, you may want to consider the following options:
- Refund: Check if the purchase is eligible for a refund through the Microsoft Store. You can usually request a refund for digital purchases if it's within a certain time frame.
- Purchase the Game: If the DLC is something your son is interested in, you might consider purchasing the base game to utilize the DLC.
- Contact Support: If you have any issues with the refund process or need further assistance, contacting Microsoft Support can provide additional guidance.
Make sure to keep the purchase receipt and any relevant account information handy when seeking support or a refund.